Improved stench-trap



UNITED STATES PATENT OFFICE.,

F. H. WILLIAMS, OF SYRACUSE, NEW YORK.

IMPROVED STENCH-TRAP.

Speciiication forming part of Letters Patent No. 56,479, dated July 17, 1866.

To all 'whom it may concern:

Be it known that I, FRANcIs H. WILLIAMS, of Syracuse, in the county of Onondaga and State of New York, have invented a new and Improved Stench-Trap; and I do hereby declare that the following is a full, clear, and eX act description,tl.1ereoi', which will enable others skilled in the art to make and use the same, reference bein g had to the accompanying drawings, forming part of' this specification, in which- Figure 1 represents a longitudinal vertical section of this invention. Fig. 2 is a plan or top View ot' the same.

Similar letters of reference indicate like parts.

This invention consists in a sink, the interior of which is provided with an inclined apron extending over the edge oi' a tray, in combination with a valve which closes the communication between the sewer and the tray in such a manner that water or other liquid poured down through the sink will lill the tray, and then, by forcing the valve open, run down the sewer; but as soon as the supply of water stops the valve closes down on its seat, and the water contained in the tray, together with the valve, prevent the escape of stench from the sewer through the sink.

A represents a sink, made of cast-iron or any other suitable material, in the form of a square conical box of any suitable size, according to the place where it is to be used.

Under the strainer B of this sink is an inclined apron, O, which extends down over the edge of a tray, D, as clearly shown in Fig. 1 of the drawings.

The communication between the tray D and the sewer or waste-pipe is closed by a valve, E, of any suitable construction, which is so arranged that i't opens by a pressure from the interior ofthe tray. If water is poured down through the sink it lls the tray D, and by raising the valve E it escapes down into the sewer. As soon as the supply of Water stops the valve closes, and the water remaining in the tray, together with the valve, preventthe escape oil stench from the sewer back through the sink, and a simple and effective stenchtrap is obtained, which is particularlyr applicable for streets in cities, where it can be easily so arranged that the strainer is level with the pavement, and that all the dirt and water are readily swept down into the sewer, while the escape of stench from the sewer back in the street is eft'ectually prevented.

It' desired, however, this improvement may be applied to sinks in buildings, and in this case the box A is made to connect with the sewer by a suitable waste-pipe, instead of being placed directly over the sewer, as shown in the drawings.

What I claim as new, and desire to secure 

